diff --git a/global.org b/global.org
index f3ce89d..71d29ad 100644
--- a/global.org
+++ b/global.org
@@ -233,7 +233,12 @@
     #+begin_src emacs-lisp
       (add-to-list 'display-buffer-alist
                    '("\\*mu4e-headers\\*"
-                     (display-buffer-reuse-window)))
+                     display-buffer-reuse-window))
+      (add-to-list 'display-buffer-alist
+                   '("\\*mu4e-main\\*"
+                     display-buffer-reuse-window
+                     (dedicated . t)
+                     (inhibit-same-window . nil)))
     #+end_src
     Then, treat the ~calendar~
     #+begin_src emacs-lisp